Yunnan Mine Tour (Funing Sangjinba Gold Mine)

Zhesangba Gold Mine is located in Bajin Forest Farm, Zhesang Township, Funing County, Yunnan Province. There are highways in Yunnan and Guangxi provinces, and forest highway reaches the mine, with convenient transportation and more vegetation in the mining area, which has a great impact on exploration and development. Through general survey and exploration, it is preliminarily proved that this gold mine is a medium-sized prospective gold mine.

Farewell to the towering concrete jungle and the hot and humid sauna days is the dream and expectation of people who have lived in the city for a long time. Several good friends got together and set foot on the road of searching for mulberry gold mine in Funing.

A group of people are driving two cars. Starting point: Funing County

Enter Puting South Road and drive for 240 meters.

Turn right, enter Fuzhou Road and drive 100 meters.

Turn around and enter Fuzhou Road for 380 meters.

Turn left onto Yingbin Road 1. 1 km.

Enter the roundabout, take Yingbin Road to Guang Kun Expressway and drive1.4km.

Go straight and enter Guang Kun Expressway for 5 1.7 km.

Go straight, from Guang Kun Expressway to Ruilin Line, and drive 620 meters.

Turn left, enter the Ruilin line and drive 890 meters.

Turn right from Ruilin Line and drive 30 meters to Bajin Forest Farm in Zhesang Township.

Arrival destination: Bajin Forest Farm, Zhesang Township.

Seeing the scenery, enjoying folk customs, tasting snacks and taking beautiful pictures are very tiring, but the fatigue of summer heat is gone forever, just like young people enjoy it.

You can reach the mine along the forest road. In the distance, the mountains are mountainous and green. Open the window and the cool air is refreshing and intoxicating.

At eight o'clock in the morning, I arrived at the Sangjinba Gold Mine, and there was a golden hill in front of me.

Sangjinba gold deposit in Funing, located in the "Golden Triangle" structural belt of Yunnan, Guizhou and Guangxi, is a typical fine disseminated gold deposit, and pyrite is an important gold-bearing mineral in the deposit. According to the typomorphic characteristics of pyrite, such as reflection color, reflectivity, hardness, particle size, crushing degree and chemical composition, the gold content from excellent to poor is fine crushed pyrite-fine authigenic pyrite-coarse authigenic pyrite-strawberry pyrite and colloidal pyrite. Strawberry pyrite and colloidal pyrite contain no gold and were formed in the sedimentary period, but they were all transformed by hydrothermal solution in the later stage. Gold-bearing iron ore is mainly formed in hydrothermal mineralization period, and the deepening of fragmentation reflects the superimposed transformation of tectonic movement and multi-stage hydrothermal solution.

After a short rest in the mine, we began to observe the geological characteristics of the mining area.

The exposed strata of Zhesang Gold Mine are Permian Middle Basalt Formation and Shangwujiaping Formation from old to new. Lower Triassic Luolou Formation and Middle Triassic Baifeng Formation. The gold deposit is located in the south wing of Zhesang anticline, where faults are developed, which can be roughly divided into early ne-trending faults, NW-trending faults and near EW-trending faults. The intrusive rocks in this area are Indosinian diabase and gabbro, which appear as dykes and dikes. The extrusive rocks are mainly basalt and tuffaceous basalt with strong alteration. Wall rock alteration mainly includes pyritization, arsenopyrite, silicification and argillization.

The main metal minerals in the deposit are pyrite, arsenopyrite and limonite, with a small amount of chalcopyrite, tetrahedrite and sphalerite. Gangue minerals are mainly chronological (mainly vein-shaped chronological, containing a small amount of chalcedony) and carbonate minerals, with a small amount of sericite, muscovite, argillaceous and broken carbonaceous materials. Ore structures mainly include dense disseminated structure, dispersed disseminated structure, veinlet structure and honeycomb structure, and ore structures mainly include automorphic-semi-automorphic crystal structure, raspberry-like structure, irregular shaped particle structure, colloid structure and metasomatism illusion structure.

The formation of Zhesang gold deposit has experienced sedimentary diagenesis, hydrothermal mineralization and supergene oxidation, and gold enrichment and mineralization mainly occurred in hydrothermal mineralization. Hydrothermal mineralization can be divided into three stages: (1) pyrite-arsenopyrite-quartz-muscovite stage; (2) Timely-pyrite-arsenopyrite-sericite stage; (Ⅲ) Tetrahedrite-chalcopyrite-sphalerite-isochron-calcite stage.

Gold deposits mainly occur in volcanic tuff of Bi Li Formation of Upper Permian, and there are gold anomalies or gold-bearing in overlying turbidite of Lower Triassic.

Along the way, sometimes the trees are lush and full of vitality, and sometimes the mountains are wrinkled; Sometimes steep walls are opposite and faults cross; Sometimes the peaks and turns, the ore body suddenly appears, and the surrounding rock changes with sinkholes. After a trip to the mountain road, various geological phenomena appear constantly, and every gold mine is fascinating to explore.

Before the surface gold mine emerged, friends took a closer look at the characteristics of the ore body.

At present, gold deposits are found in the eastern end of the anticline and the eastern part of the south wing. Gold mainly occurs in a set of pyroclastic rocks in the deep trough basin facies of the Upper Permian Beli Formation. The ore bodies are layered, quasi-layered, bundled and veined.

Gold mainly occurs in pyrite and quartz veins. Gold-bearing iron ores are pentagonal dodecahedron, octahedron, polycrystalline and strawberry pyrite, which are often distributed in pyroclastic rocks in the form of dispersion, strip, cluster or vein. Gold is often distributed in pyrite in a ring shape. Generally, the grade of gold is 2-8g/T, and some are as high as 34g/t. ..

Associated with gold ore (* * *) are mercury ore, antimony ore, pyrite and arsenopyrite.

The alteration related to gold mineralization includes silicification, pyritization, arsenopyrite and argillization, among which silicification and pyritization are the main ones, followed by arsenopyrite.

According to the geological data and the results of temperature measurement by homogenization method, the homogenization temperature is 1 10 ~ 2 15℃, with an average value of 162.5℃. According to the blasting method, the temperature is between 300℃ and 350℃. Microscopically, there are mainly two types of inclusions: pure liquid inclusions, mostly round, oblong, oval and irregular, with small volume, generally less than 1um, distributed in groups and single type. Gas-liquid inclusions are mostly irregular, long and oval, with uneven volume, generally 2 ~ 15um, mostly distributed in clusters, and its gas component is mainly co.

The structures related to gold mineralization and ore control are mainly the overlapping unconformity surface between the lower Triassic and the upper Permian caused by Indosinian movement, the interlayer fault zone along the unconformity surface and the shear intensive fracture zone in the strata on both sides of the unconformity surface, which is the best structure for gold formation and ore control.

In this place surrounded by mountains, the weather will change quickly. For a while, the clouds are lingering, and for a while, the sky is high and the clouds are light; When the sky is clear, I will see Wan Li; In the dense fog, heaven and earth are integrated and difficult to distinguish, as in fairyland; Just now, under the clear sky, a cloud floated by, which may bring a downpour. After the storm, it's sunny Wan Li again, and everything on the earth is brand-new, and the sweet breath is extremely refreshing.

After seeing all the Zhesang gold mines, during the intense trip, I not only visited the topography of the gold mines, but also enjoyed the beautiful scenery of the mountains. The next day, I visited many places of interest in Funing County, and also enjoyed the Tanabata Festival and the octagonal in Funing.

Vinegar is a famous dish of Funing Zhuang nationality. Not only is it loved by many people in the local area, but it also enjoys a high reputation in Guangdong, Hong Kong and Macao. Although this vinegar is a common condiment, it is not easy to make. It is made of good white glutinous rice, soaked for 7 days and then steamed into rice. Rice is fermented in a jar for 7 days, then fermented with water for 7 days, then the water is filtered off, stored for half a year to one year, and finally vinegar is made with Amomum tsaoko, star anise, brown sugar and salt. Because it takes seven days to soak rice for fermentation, it is called seven vinegar.

Funing, surrounded by green hills, with clear water and purple, is rich in subtropical characteristics and is also the hometown of octagonal in Yunnan Province.

Funing Bajiao concentrated production area is Dong Bo Gong She where Yao people live in compact communities. The local Yao people say that a village without octagonal can't be regarded as a real Yao village. This is also the case. There are mountains and plains everywhere, octagonal forests. Climb high and you can't see the edge of the forest. The mountain breeze pushed the green Tao to the foot, as if there were broken jade-like water droplets splashing on the upper body, which was refreshing and very comfortable. But the most emotional thing is to look at the octagonal king. The octagonal king is in a Zhuang stockade called Po, which is 0/3 kilometers away from the county seat/kloc-. We came to Funing, just in time for the season of fennel fragrance: that afternoon, the autumn sun was shining high and the white clouds were leisurely; As soon as I got to the slope, I saw a tall and stout octagonal tree standing by the village. The green branches and leaves cling together and hold the ball up, which is a bit like the image of the northern rhomboid poplar; Standing under the tree and looking up, the treetops seemed to touch the blue sky.

The magnificence of Funing mountains and rivers, the beauty of many natural mountains and rivers scattered in Funing, and the characteristic products are also being developed and protected in an organized way. Everything grows and the four seasons cycle. When you really want to embrace nature, it's time for you to act. From the heart, the heart moves.